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3 years ago

I need some help please

Mathematics

1 answer:

Nataliya [291]3 years ago

4 0

Answer:

25π

Step-by-step explanation:

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The population of Canada in 1999 was 31,006,000. If the

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It takes only 2 years

because

31,006,000 x 1.2% = 6,201,200

so,

31, 006, 000 + 6,201,200 = 37, 207, 200

37, 207, 200 + 6,201,200 = 43, 408, 400

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3 years ago

What conclusions can you draw from the distances that you recorded in question 7

tangare [24]

Answer:

If corresponding vertices on an image and a preimage are connected with line segments, the line segments are divided equally by the line of reflection. That is, the perpendicular distance from the line of reflection to either of the corresponding vertices is the same. Line is a perpendicular bisector of the connecting line segments.

Step-by-step explanation:

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4 years ago

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What is the area to this??

jolli1 [7]

Answer:

30 units squared

Step-by-step explanation:

1/2(base)(height)

base=10

height=6

1/2(10)(6) = 5*6 = 30!

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3 years ago

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A cylinder has radius r and height h. A. How many times greater is the surface area of a cylinder when both dimensions are multi

Ierofanga [76]

Answer: A. Factor 2 => 4x greater

Factor 3 => 9x greater

Factor 5 => 25x greater

Step-by-step explanation: A. A cylinder is formed by 2 circles and a rectangle in the middle. That's why surface area is given by circumference of a circle, which is the length of the rectangle times height of the rectangle, i.e.:

A = 2.π.r.h

A cylinder of radius r and height h has area:

$A_{1}$ = 2πrh

If multiply both dimensions by a factor of 2:

$A_{2}$ = 2.π.2r.2h

$A_{2}$ = 8πrh

Comparing $A_{1}$ to $A_{2}$ :

$\frac{A_{2}}{A_{1}}$ = $\frac{8.\pi.rh}{2.\pi.rh}$ = 4

Doubling radius and height creates a surface area of a cylinder 4 times greater.

By factor 3:

$A_{3} = 2.\pi.3r.3h$

$A_{3} = 18.\pi.r.h$

Comparing areas:

$\frac{A_{3}}{A_{1}}$ = $\frac{18.\pi.r.h}{2.\pi.r.h}$ = 9

Multiplying by 3, gives an area 9 times bigger.

By factor 5:

$A_{5} = 2.\pi.5r.5h$

$A_{5} = 50.\pi.r.h$

Comparing:

$\frac{A_{5}}{A_{1}}$ = $\frac{50.\pi.r.h}{2.\pi.r.h}$ = 25

The new area is 25 times greater.

B. By analysing how many times greater and the factor that the dimensions are multiplied, you can notice the increase in area is factor². For example, when multiplied by a factor of 2, the new area is 4 times greater.

3 0

3 years ago

a team of five is chosen from seven men and five women to work on a special project. in how many ways can the team be chosen to

tiny-mole [99]

Answer:

210 ways.

Step-by-step explanation:

The number of ways to choose 3 women from 5 is 5C3 = 5! / 3!2!

= 10 ways.

The number of ways to choose 2 men form 7 = 7C2 = 7! / 5!2! = 21 ways.

So the number of ways of choosing the team of 5 = 10 * 21 = 210 ways.

7 0

3 years ago